CA2437911A1 - Jack for a working implement and method - Google Patents

Jack for a working implement and method Download PDF

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Publication number
CA2437911A1
CA2437911A1 CA002437911A CA2437911A CA2437911A1 CA 2437911 A1 CA2437911 A1 CA 2437911A1 CA 002437911 A CA002437911 A CA 002437911A CA 2437911 A CA2437911 A CA 2437911A CA 2437911 A1 CA2437911 A1 CA 2437911A1
Authority
CA
Canada
Prior art keywords
jack
substrate
lift assembly
actuator
frame
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
CA002437911A
Other languages
French (fr)
Other versions
CA2437911C (en
Inventor
Marc D. Curtis
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Curtis International Inc
Original Assignee
Curtis International Inc
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Curtis International Inc filed Critical Curtis International Inc
Priority to CA2756617A priority Critical patent/CA2756617C/en
Publication of CA2437911A1 publication Critical patent/CA2437911A1/en
Application granted granted Critical
Publication of CA2437911C publication Critical patent/CA2437911C/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Classifications

    • E—FIXED CONSTRUCTIONS
    • E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
    • E01H—STREET CLEANING; CLEANING OF PERMANENT WAYS; CLEANING BEACHES; DISPERSING OR PREVENTING FOG IN GENERAL CLEANING STREET OR RAILWAY FURNITURE OR TUNNEL WALLS
    • E01H1/00—Removing undesirable matter from roads or like surfaces, with or without moistening of the surface
    • E—FIXED CONSTRUCTIONS
    • E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
    • E01H—STREET CLEANING; CLEANING OF PERMANENT WAYS; CLEANING BEACHES; DISPERSING OR PREVENTING FOG IN GENERAL CLEANING STREET OR RAILWAY FURNITURE OR TUNNEL WALLS
    • E01H5/00—Removing snow or ice from roads or like surfaces; Grading or roughening snow or ice
    • E01H5/04—Apparatus propelled by animal or engine power; Apparatus propelled by hand with driven dislodging or conveying levelling elements, conveying pneumatically for the dislodged material
    • E01H5/06—Apparatus propelled by animal or engine power; Apparatus propelled by hand with driven dislodging or conveying levelling elements, conveying pneumatically for the dislodged material dislodging essentially by non-driven elements, e.g. scraper blades, snow-plough blades, scoop blades
    • E01H5/065—Apparatus propelled by animal or engine power; Apparatus propelled by hand with driven dislodging or conveying levelling elements, conveying pneumatically for the dislodged material dislodging essentially by non-driven elements, e.g. scraper blades, snow-plough blades, scoop blades characterised by the form of the snow-plough blade, e.g. flexible, or by snow-plough blade accessories
    • E01H5/066—Snow-plough blade accessories, e.g. deflector plates, skid shoes

Abstract

Jack for raising and lowering a working implement such as hydraulically driven snow blades or other utilitarian accessories. Actuation of the jack allows for proper vertical alignment of the lift assembly for engagement to a vehicle chassis. Once engaged, the jack can be actuated into an inoperative position until the lift assembly is to be removed from the chassis.

Claims (22)

1. A jack for raising and lowering a working implement relative to a substrate, comprising:
a jack having a substrate engaging end and a portion spaced therefrom for coupling said jack to said assembly;
a first actuator for moving said jack from a deployed position in which said substrate engaging end contacts said substrate to an inoperative position in which said substrate engaging end is not in contact with said substrate;
a second actuator for moving said jack from said inoperative position to said deployed position, whereby the range of motion between said inoperative position and said deployed position is infinitely adjustable.
2. The jack of claim 1, wherein said first actuator is a chain dedicated to the lifting of said assembly.
3. The jack of claim 2, further comprising a frame, and wherein said chain is fixed to said jack such that upon actuation of said chain, said jack moves to said inoperative position and contacts said frame, causing said frame to move in the same direction of the jack.
4. The jack of claim 1, wherein said second actuator is biased toward said deployed position, such that movement of said first actuator creates stored energy in said second actuator.
5. The jack of claim 4, wherein said stored energy is used to actuate said jack to said deployed position.
6. The jack of claim 9, wherein said second actuator is selected from the group comprising a gas spring, a hydraulic cylinder, a mechanical spring, and combinations thereof.
7. The jack of claim 1, wherein said second actuator comprises a rigid rod having a first end coupled to said jack and a second end coupled to a gas spring.
8. The jack of claim 7, wherein said rigid rod travels in a path between said deployed position and said inoperative position, and wherein said rigid rod further comprises a stop for the movement of said rod in said path in order to maintain said rod in said inoperative position.
9. The jack of claim 1, wherein said first actuator moves said jack to a substantially horizontal position relative to said substrate when in said inoperative position.
10. Jack for raising or lowering a snow plow lift assembly relative to a substrate, comprising:
a snow plow lift assembly adapted to be mounted to a vehicle chassis, said lift assembly comprising a frame;

a linking member dedicated to raising and lowering said lift assembly;
a jack having a first portion coupled to said frame of said snow plow lift assembly, and a second portion spaced from said first portion adapted to contact said substrate, said jack being movable upon actuation of said linking member relative to said substrate.
11. The jack of claim 10, wherein said linking member lifts said jack relative to said substrate.
12. The jack of claim 10, wherein said first portion is pivotally coupled to said frame about a pivot axis, and wherein rotational movement of said jack about said pivot axis raises or lowers said lift assembly.
13. The jack of claim 12, wherein said rotational movement is accomplished by lifting said linking member.
14. The jack of claim 12, further comprising an actuator coupled to said second portion and biasing said second portion toward said substrate.
15. A method of retracting a jack attached to a lift assembly relative to a substrate, said method comprising:
providing a lift assembly comprising a frame;
providing a linking member coupled to said jack dedicated to lifting said lift assembly;

providing a jack having a first portion coupled to said frame of said lift assembly, and a second portion spaced from said first portion and contacting said substrate, said jack being movable relative to said substrate;
actuating said linking member thereby causing movement of said jack, thereby raising said lift assembly.
16. The method of claim 15, wherein said jack is caused to move towards a horizontal position relative to said substrate so as to retract said jack.
17. The method of claim 15, wherein said jack contacts said frame so as to raise said lift assembly.
18. A method of deploying a jack attached to a lift assembly relative to a substrate, said method comprising:
providing a lift assembly comprising a frame;
providing a linking member coupled to said jack dedicated to lifting said lift assembly;
providing a manual actuator to deploy said jack;
providing a jack having a first portion coupled to said frame of said lift assembly, and a second portion spaced from said first portion and contacting said substrate when in a deployed position, said jack being movable relative to said substrate;

causing movement of said jack from an undeployed position to said deployed position by actuating said linking member and said manual actuator.
19. The method of claim 18, wherein said lift assembly must be in lowered position before said jack can be deployed.
20. The method of claim 19, wherein stored energy is created in said manual actuator as jack moves from deployed to undeployed position when said linking member is actuated.
21. The method of claim 20, wherein said stored energy in said manual actuator is used to deploy said jack.
22. The method of claim 18, wherein said actuator is selected from the group comprising a hydraulic cylinder, a gas spring and a mechanical spring, and is coupled to said lift assembly at one end and to said jack at other end.
CA2437911A 2002-09-20 2003-08-14 Jack for a working implement and method Expired - Fee Related CA2437911C (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CA2756617A CA2756617C (en) 2002-09-20 2003-08-14 Jack for a working implement and method

Applications Claiming Priority (6)

Application Number Priority Date Filing Date Title
US41234702P 2002-09-20 2002-09-20
US60/412,347 2002-09-20
US43455602P 2002-12-18 2002-12-18
US60/434,556 2002-12-18
US10/368,963 2003-02-19
US10/368,963 US7103995B2 (en) 2002-09-20 2003-02-19 Jack for a working implement and method

Related Child Applications (1)

Application Number Title Priority Date Filing Date
CA2756617A Division CA2756617C (en) 2002-09-20 2003-08-14 Jack for a working implement and method

Publications (2)

Publication Number Publication Date
CA2437911A1 true CA2437911A1 (en) 2004-03-20
CA2437911C CA2437911C (en) 2012-01-10

Family

ID=32096848

Family Applications (2)

Application Number Title Priority Date Filing Date
CA2756617A Expired - Fee Related CA2756617C (en) 2002-09-20 2003-08-14 Jack for a working implement and method
CA2437911A Expired - Fee Related CA2437911C (en) 2002-09-20 2003-08-14 Jack for a working implement and method

Family Applications Before (1)

Application Number Title Priority Date Filing Date
CA2756617A Expired - Fee Related CA2756617C (en) 2002-09-20 2003-08-14 Jack for a working implement and method

Country Status (2)

Country Link
US (3) US7103995B2 (en)
CA (2) CA2756617C (en)

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Also Published As

Publication number Publication date
CA2756617C (en) 2014-12-02
US20050066552A1 (en) 2005-03-31
CA2437911C (en) 2012-01-10
US20040074115A1 (en) 2004-04-22
CA2756617A1 (en) 2004-03-20
US7103995B2 (en) 2006-09-12
US20050076543A1 (en) 2005-04-14
US7228650B2 (en) 2007-06-12
US7260902B2 (en) 2007-08-28

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EEER Examination request
MKLA Lapsed

Effective date: 20160815